1 |
#include <math.h> |
2 |
#include <stdlib.h> |
3 |
#include <unistd.h> |
4 |
#include <fcntl.h> |
5 |
#include <signal.h> |
6 |
|
7 |
#include <stdio.h> |
8 |
|
9 |
#include <assert.h> |
10 |
#include <errno.h> |
11 |
#include <sys/time.h> |
12 |
#include <time.h> |
13 |
|
14 |
#define HAVE_EPOLL 1 |
15 |
|
16 |
#ifndef HAVE_MONOTONIC |
17 |
# ifdef CLOCK_MONOTONIC |
18 |
# define HAVE_MONOTONIC 1 |
19 |
# endif |
20 |
#endif |
21 |
|
22 |
#ifndef HAVE_SELECT |
23 |
# define HAVE_SELECT 1 |
24 |
#endif |
25 |
|
26 |
#ifndef HAVE_EPOLL |
27 |
# define HAVE_EPOLL 0 |
28 |
#endif |
29 |
|
30 |
#ifndef HAVE_REALTIME |
31 |
# define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
32 |
#endif |
33 |
|
34 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
35 |
#define MAX_BLOCKTIME 60. |
36 |
|
37 |
#include "ev.h" |
38 |
|
39 |
typedef struct ev_watcher *W; |
40 |
typedef struct ev_watcher_list *WL; |
41 |
typedef struct ev_watcher_time *WT; |
42 |
|
43 |
static ev_tstamp now, diff; /* monotonic clock */ |
44 |
ev_tstamp ev_now; |
45 |
int ev_method; |
46 |
|
47 |
static int have_monotonic; /* runtime */ |
48 |
|
49 |
static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
50 |
static void (*method_modify)(int fd, int oev, int nev); |
51 |
static void (*method_poll)(ev_tstamp timeout); |
52 |
|
53 |
/*****************************************************************************/ |
54 |
|
55 |
ev_tstamp |
56 |
ev_time (void) |
57 |
{ |
58 |
#if HAVE_REALTIME |
59 |
struct timespec ts; |
60 |
clock_gettime (CLOCK_REALTIME, &ts); |
61 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 |
#else |
63 |
struct timeval tv; |
64 |
gettimeofday (&tv, 0); |
65 |
return tv.tv_sec + tv.tv_usec * 1e-6; |
66 |
#endif |
67 |
} |
68 |
|
69 |
static ev_tstamp |
70 |
get_clock (void) |
71 |
{ |
72 |
#if HAVE_MONOTONIC |
73 |
if (have_monotonic) |
74 |
{ |
75 |
struct timespec ts; |
76 |
clock_gettime (CLOCK_MONOTONIC, &ts); |
77 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
78 |
} |
79 |
#endif |
80 |
|
81 |
return ev_time (); |
82 |
} |
83 |
|
84 |
#define array_needsize(base,cur,cnt,init) \ |
85 |
if ((cnt) > cur) \ |
86 |
{ \ |
87 |
int newcnt = cur ? cur << 1 : 16; \ |
88 |
base = realloc (base, sizeof (*base) * (newcnt)); \ |
89 |
init (base + cur, newcnt - cur); \ |
90 |
cur = newcnt; \ |
91 |
} |
92 |
|
93 |
/*****************************************************************************/ |
94 |
|
95 |
typedef struct |
96 |
{ |
97 |
struct ev_io *head; |
98 |
unsigned char wev, rev; /* want, received event set */ |
99 |
} ANFD; |
100 |
|
101 |
static ANFD *anfds; |
102 |
static int anfdmax; |
103 |
|
104 |
static int *fdchanges; |
105 |
static int fdchangemax, fdchangecnt; |
106 |
|
107 |
static void |
108 |
anfds_init (ANFD *base, int count) |
109 |
{ |
110 |
while (count--) |
111 |
{ |
112 |
base->head = 0; |
113 |
base->wev = base->rev = EV_NONE; |
114 |
++base; |
115 |
} |
116 |
} |
117 |
|
118 |
typedef struct |
119 |
{ |
120 |
W w; |
121 |
int events; |
122 |
} ANPENDING; |
123 |
|
124 |
static ANPENDING *pendings; |
125 |
static int pendingmax, pendingcnt; |
126 |
|
127 |
static void |
128 |
event (W w, int events) |
129 |
{ |
130 |
w->pending = ++pendingcnt; |
131 |
array_needsize (pendings, pendingmax, pendingcnt, ); |
132 |
pendings [pendingcnt - 1].w = w; |
133 |
pendings [pendingcnt - 1].events = events; |
134 |
} |
135 |
|
136 |
static void |
137 |
fd_event (int fd, int events) |
138 |
{ |
139 |
ANFD *anfd = anfds + fd; |
140 |
struct ev_io *w; |
141 |
|
142 |
for (w = anfd->head; w; w = w->next) |
143 |
{ |
144 |
int ev = w->events & events; |
145 |
|
146 |
if (ev) |
147 |
event ((W)w, ev); |
148 |
} |
149 |
} |
150 |
|
151 |
static void |
152 |
queue_events (W *events, int eventcnt, int type) |
153 |
{ |
154 |
int i; |
155 |
|
156 |
for (i = 0; i < eventcnt; ++i) |
157 |
event (events [i], type); |
158 |
} |
159 |
|
160 |
/*****************************************************************************/ |
161 |
|
162 |
static struct ev_timer **timers; |
163 |
static int timermax, timercnt; |
164 |
|
165 |
static struct ev_periodic **periodics; |
166 |
static int periodicmax, periodiccnt; |
167 |
|
168 |
static void |
169 |
upheap (WT *timers, int k) |
170 |
{ |
171 |
WT w = timers [k]; |
172 |
|
173 |
while (k && timers [k >> 1]->at > w->at) |
174 |
{ |
175 |
timers [k] = timers [k >> 1]; |
176 |
timers [k]->active = k + 1; |
177 |
k >>= 1; |
178 |
} |
179 |
|
180 |
timers [k] = w; |
181 |
timers [k]->active = k + 1; |
182 |
|
183 |
} |
184 |
|
185 |
static void |
186 |
downheap (WT *timers, int N, int k) |
187 |
{ |
188 |
WT w = timers [k]; |
189 |
|
190 |
while (k < (N >> 1)) |
191 |
{ |
192 |
int j = k << 1; |
193 |
|
194 |
if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
195 |
++j; |
196 |
|
197 |
if (w->at <= timers [j]->at) |
198 |
break; |
199 |
|
200 |
timers [k] = timers [j]; |
201 |
timers [k]->active = k + 1; |
202 |
k = j; |
203 |
} |
204 |
|
205 |
timers [k] = w; |
206 |
timers [k]->active = k + 1; |
207 |
} |
208 |
|
209 |
/*****************************************************************************/ |
210 |
|
211 |
typedef struct |
212 |
{ |
213 |
struct ev_signal *head; |
214 |
sig_atomic_t gotsig; |
215 |
} ANSIG; |
216 |
|
217 |
static ANSIG *signals; |
218 |
static int signalmax; |
219 |
|
220 |
static int sigpipe [2]; |
221 |
static sig_atomic_t gotsig; |
222 |
static struct ev_io sigev; |
223 |
|
224 |
static void |
225 |
signals_init (ANSIG *base, int count) |
226 |
{ |
227 |
while (count--) |
228 |
{ |
229 |
base->head = 0; |
230 |
base->gotsig = 0; |
231 |
++base; |
232 |
} |
233 |
} |
234 |
|
235 |
static void |
236 |
sighandler (int signum) |
237 |
{ |
238 |
signals [signum - 1].gotsig = 1; |
239 |
|
240 |
if (!gotsig) |
241 |
{ |
242 |
gotsig = 1; |
243 |
write (sigpipe [1], &gotsig, 1); |
244 |
} |
245 |
} |
246 |
|
247 |
static void |
248 |
sigcb (struct ev_io *iow, int revents) |
249 |
{ |
250 |
struct ev_signal *w; |
251 |
int sig; |
252 |
|
253 |
gotsig = 0; |
254 |
read (sigpipe [0], &revents, 1); |
255 |
|
256 |
for (sig = signalmax; sig--; ) |
257 |
if (signals [sig].gotsig) |
258 |
{ |
259 |
signals [sig].gotsig = 0; |
260 |
|
261 |
for (w = signals [sig].head; w; w = w->next) |
262 |
event ((W)w, EV_SIGNAL); |
263 |
} |
264 |
} |
265 |
|
266 |
static void |
267 |
siginit (void) |
268 |
{ |
269 |
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
270 |
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
271 |
|
272 |
/* rather than sort out wether we really need nb, set it */ |
273 |
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
274 |
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
275 |
|
276 |
evio_set (&sigev, sigpipe [0], EV_READ); |
277 |
evio_start (&sigev); |
278 |
} |
279 |
|
280 |
/*****************************************************************************/ |
281 |
|
282 |
static struct ev_idle **idles; |
283 |
static int idlemax, idlecnt; |
284 |
|
285 |
static struct ev_check **checks; |
286 |
static int checkmax, checkcnt; |
287 |
|
288 |
/*****************************************************************************/ |
289 |
|
290 |
#if HAVE_EPOLL |
291 |
# include "ev_epoll.c" |
292 |
#endif |
293 |
#if HAVE_SELECT |
294 |
# include "ev_select.c" |
295 |
#endif |
296 |
|
297 |
int ev_init (int flags) |
298 |
{ |
299 |
#if HAVE_MONOTONIC |
300 |
{ |
301 |
struct timespec ts; |
302 |
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
303 |
have_monotonic = 1; |
304 |
} |
305 |
#endif |
306 |
|
307 |
ev_now = ev_time (); |
308 |
now = get_clock (); |
309 |
diff = ev_now - now; |
310 |
|
311 |
if (pipe (sigpipe)) |
312 |
return 0; |
313 |
|
314 |
ev_method = EVMETHOD_NONE; |
315 |
#if HAVE_EPOLL |
316 |
if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
317 |
#endif |
318 |
#if HAVE_SELECT |
319 |
if (ev_method == EVMETHOD_NONE) select_init (flags); |
320 |
#endif |
321 |
|
322 |
if (ev_method) |
323 |
{ |
324 |
evw_init (&sigev, sigcb); |
325 |
siginit (); |
326 |
} |
327 |
|
328 |
return ev_method; |
329 |
} |
330 |
|
331 |
/*****************************************************************************/ |
332 |
|
333 |
void ev_prefork (void) |
334 |
{ |
335 |
/* nop */ |
336 |
} |
337 |
|
338 |
void ev_postfork_parent (void) |
339 |
{ |
340 |
/* nop */ |
341 |
} |
342 |
|
343 |
void ev_postfork_child (void) |
344 |
{ |
345 |
#if HAVE_EPOLL |
346 |
if (ev_method == EVMETHOD_EPOLL) |
347 |
epoll_postfork_child (); |
348 |
#endif |
349 |
|
350 |
evio_stop (&sigev); |
351 |
close (sigpipe [0]); |
352 |
close (sigpipe [1]); |
353 |
pipe (sigpipe); |
354 |
siginit (); |
355 |
} |
356 |
|
357 |
/*****************************************************************************/ |
358 |
|
359 |
static void |
360 |
fd_reify (void) |
361 |
{ |
362 |
int i; |
363 |
|
364 |
for (i = 0; i < fdchangecnt; ++i) |
365 |
{ |
366 |
int fd = fdchanges [i]; |
367 |
ANFD *anfd = anfds + fd; |
368 |
struct ev_io *w; |
369 |
|
370 |
int wev = 0; |
371 |
|
372 |
for (w = anfd->head; w; w = w->next) |
373 |
wev |= w->events; |
374 |
|
375 |
if (anfd->wev != wev) |
376 |
{ |
377 |
method_modify (fd, anfd->wev, wev); |
378 |
anfd->wev = wev; |
379 |
} |
380 |
} |
381 |
|
382 |
fdchangecnt = 0; |
383 |
} |
384 |
|
385 |
static void |
386 |
call_pending () |
387 |
{ |
388 |
int i; |
389 |
|
390 |
for (i = 0; i < pendingcnt; ++i) |
391 |
{ |
392 |
ANPENDING *p = pendings + i; |
393 |
|
394 |
if (p->w) |
395 |
{ |
396 |
p->w->pending = 0; |
397 |
p->w->cb (p->w, p->events); |
398 |
} |
399 |
} |
400 |
|
401 |
pendingcnt = 0; |
402 |
} |
403 |
|
404 |
static void |
405 |
timers_reify () |
406 |
{ |
407 |
while (timercnt && timers [0]->at <= now) |
408 |
{ |
409 |
struct ev_timer *w = timers [0]; |
410 |
|
411 |
/* first reschedule or stop timer */ |
412 |
if (w->repeat) |
413 |
{ |
414 |
w->at = now + w->repeat; |
415 |
assert (("timer timeout in the past, negative repeat?", w->at > now)); |
416 |
downheap ((WT *)timers, timercnt, 0); |
417 |
} |
418 |
else |
419 |
evtimer_stop (w); /* nonrepeating: stop timer */ |
420 |
|
421 |
event ((W)w, EV_TIMEOUT); |
422 |
} |
423 |
} |
424 |
|
425 |
static void |
426 |
periodics_reify () |
427 |
{ |
428 |
while (periodiccnt && periodics [0]->at <= ev_now) |
429 |
{ |
430 |
struct ev_periodic *w = periodics [0]; |
431 |
|
432 |
/* first reschedule or stop timer */ |
433 |
if (w->interval) |
434 |
{ |
435 |
w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
436 |
assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
437 |
downheap ((WT *)periodics, periodiccnt, 0); |
438 |
} |
439 |
else |
440 |
evperiodic_stop (w); /* nonrepeating: stop timer */ |
441 |
|
442 |
event ((W)w, EV_TIMEOUT); |
443 |
} |
444 |
} |
445 |
|
446 |
static void |
447 |
periodics_reschedule (ev_tstamp diff) |
448 |
{ |
449 |
int i; |
450 |
|
451 |
/* adjust periodics after time jump */ |
452 |
for (i = 0; i < periodiccnt; ++i) |
453 |
{ |
454 |
struct ev_periodic *w = periodics [i]; |
455 |
|
456 |
if (w->interval) |
457 |
{ |
458 |
ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
459 |
|
460 |
if (fabs (diff) >= 1e-4) |
461 |
{ |
462 |
evperiodic_stop (w); |
463 |
evperiodic_start (w); |
464 |
|
465 |
i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
466 |
} |
467 |
} |
468 |
} |
469 |
} |
470 |
|
471 |
static void |
472 |
time_update () |
473 |
{ |
474 |
int i; |
475 |
|
476 |
ev_now = ev_time (); |
477 |
|
478 |
if (have_monotonic) |
479 |
{ |
480 |
ev_tstamp odiff = diff; |
481 |
|
482 |
for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
483 |
{ |
484 |
now = get_clock (); |
485 |
diff = ev_now - now; |
486 |
|
487 |
if (fabs (odiff - diff) < MIN_TIMEJUMP) |
488 |
return; /* all is well */ |
489 |
|
490 |
ev_now = ev_time (); |
491 |
} |
492 |
|
493 |
periodics_reschedule (diff - odiff); |
494 |
/* no timer adjustment, as the monotonic clock doesn't jump */ |
495 |
} |
496 |
else |
497 |
{ |
498 |
if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
499 |
{ |
500 |
periodics_reschedule (ev_now - now); |
501 |
|
502 |
/* adjust timers. this is easy, as the offset is the same for all */ |
503 |
for (i = 0; i < timercnt; ++i) |
504 |
timers [i]->at += diff; |
505 |
} |
506 |
|
507 |
now = ev_now; |
508 |
} |
509 |
} |
510 |
|
511 |
int ev_loop_done; |
512 |
|
513 |
void ev_loop (int flags) |
514 |
{ |
515 |
double block; |
516 |
ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
517 |
|
518 |
if (checkcnt) |
519 |
{ |
520 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
521 |
call_pending (); |
522 |
} |
523 |
|
524 |
do |
525 |
{ |
526 |
/* update fd-related kernel structures */ |
527 |
fd_reify (); |
528 |
|
529 |
/* calculate blocking time */ |
530 |
|
531 |
/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
532 |
ev_now = ev_time (); |
533 |
|
534 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
535 |
block = 0.; |
536 |
else |
537 |
{ |
538 |
block = MAX_BLOCKTIME; |
539 |
|
540 |
if (timercnt) |
541 |
{ |
542 |
ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
543 |
if (block > to) block = to; |
544 |
} |
545 |
|
546 |
if (periodiccnt) |
547 |
{ |
548 |
ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
549 |
if (block > to) block = to; |
550 |
} |
551 |
|
552 |
if (block < 0.) block = 0.; |
553 |
} |
554 |
|
555 |
method_poll (block); |
556 |
|
557 |
/* update ev_now, do magic */ |
558 |
time_update (); |
559 |
|
560 |
/* queue pending timers and reschedule them */ |
561 |
periodics_reify (); /* absolute timers first */ |
562 |
timers_reify (); /* relative timers second */ |
563 |
|
564 |
/* queue idle watchers unless io or timers are pending */ |
565 |
if (!pendingcnt) |
566 |
queue_events ((W *)idles, idlecnt, EV_IDLE); |
567 |
|
568 |
/* queue check and possibly idle watchers */ |
569 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
570 |
|
571 |
call_pending (); |
572 |
} |
573 |
while (!ev_loop_done); |
574 |
|
575 |
if (ev_loop_done != 2) |
576 |
ev_loop_done = 0; |
577 |
} |
578 |
|
579 |
/*****************************************************************************/ |
580 |
|
581 |
static void |
582 |
wlist_add (WL *head, WL elem) |
583 |
{ |
584 |
elem->next = *head; |
585 |
*head = elem; |
586 |
} |
587 |
|
588 |
static void |
589 |
wlist_del (WL *head, WL elem) |
590 |
{ |
591 |
while (*head) |
592 |
{ |
593 |
if (*head == elem) |
594 |
{ |
595 |
*head = elem->next; |
596 |
return; |
597 |
} |
598 |
|
599 |
head = &(*head)->next; |
600 |
} |
601 |
} |
602 |
|
603 |
static void |
604 |
ev_start (W w, int active) |
605 |
{ |
606 |
w->pending = 0; |
607 |
w->active = active; |
608 |
} |
609 |
|
610 |
static void |
611 |
ev_stop (W w) |
612 |
{ |
613 |
if (w->pending) |
614 |
pendings [w->pending - 1].w = 0; |
615 |
|
616 |
w->active = 0; |
617 |
} |
618 |
|
619 |
/*****************************************************************************/ |
620 |
|
621 |
void |
622 |
evio_start (struct ev_io *w) |
623 |
{ |
624 |
if (ev_is_active (w)) |
625 |
return; |
626 |
|
627 |
int fd = w->fd; |
628 |
|
629 |
ev_start ((W)w, 1); |
630 |
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
631 |
wlist_add ((WL *)&anfds[fd].head, (WL)w); |
632 |
|
633 |
++fdchangecnt; |
634 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
635 |
fdchanges [fdchangecnt - 1] = fd; |
636 |
} |
637 |
|
638 |
void |
639 |
evio_stop (struct ev_io *w) |
640 |
{ |
641 |
if (!ev_is_active (w)) |
642 |
return; |
643 |
|
644 |
wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
645 |
ev_stop ((W)w); |
646 |
|
647 |
++fdchangecnt; |
648 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
649 |
fdchanges [fdchangecnt - 1] = w->fd; |
650 |
} |
651 |
|
652 |
|
653 |
void |
654 |
evtimer_start (struct ev_timer *w) |
655 |
{ |
656 |
if (ev_is_active (w)) |
657 |
return; |
658 |
|
659 |
w->at += now; |
660 |
|
661 |
assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
662 |
|
663 |
ev_start ((W)w, ++timercnt); |
664 |
array_needsize (timers, timermax, timercnt, ); |
665 |
timers [timercnt - 1] = w; |
666 |
upheap ((WT *)timers, timercnt - 1); |
667 |
} |
668 |
|
669 |
void |
670 |
evtimer_stop (struct ev_timer *w) |
671 |
{ |
672 |
if (!ev_is_active (w)) |
673 |
return; |
674 |
|
675 |
if (w->active < timercnt--) |
676 |
{ |
677 |
timers [w->active - 1] = timers [timercnt]; |
678 |
downheap ((WT *)timers, timercnt, w->active - 1); |
679 |
} |
680 |
|
681 |
w->at = w->repeat; |
682 |
|
683 |
ev_stop ((W)w); |
684 |
} |
685 |
|
686 |
void |
687 |
evtimer_again (struct ev_timer *w) |
688 |
{ |
689 |
if (ev_is_active (w)) |
690 |
{ |
691 |
if (w->repeat) |
692 |
{ |
693 |
w->at = now + w->repeat; |
694 |
downheap ((WT *)timers, timercnt, w->active - 1); |
695 |
} |
696 |
else |
697 |
evtimer_stop (w); |
698 |
} |
699 |
else if (w->repeat) |
700 |
evtimer_start (w); |
701 |
} |
702 |
|
703 |
void |
704 |
evperiodic_start (struct ev_periodic *w) |
705 |
{ |
706 |
if (ev_is_active (w)) |
707 |
return; |
708 |
|
709 |
assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
710 |
|
711 |
/* this formula differs from the one in periodic_reify because we do not always round up */ |
712 |
if (w->interval) |
713 |
w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
714 |
|
715 |
ev_start ((W)w, ++periodiccnt); |
716 |
array_needsize (periodics, periodicmax, periodiccnt, ); |
717 |
periodics [periodiccnt - 1] = w; |
718 |
upheap ((WT *)periodics, periodiccnt - 1); |
719 |
} |
720 |
|
721 |
void |
722 |
evperiodic_stop (struct ev_periodic *w) |
723 |
{ |
724 |
if (!ev_is_active (w)) |
725 |
return; |
726 |
|
727 |
if (w->active < periodiccnt--) |
728 |
{ |
729 |
periodics [w->active - 1] = periodics [periodiccnt]; |
730 |
downheap ((WT *)periodics, periodiccnt, w->active - 1); |
731 |
} |
732 |
|
733 |
ev_stop ((W)w); |
734 |
} |
735 |
|
736 |
void |
737 |
evsignal_start (struct ev_signal *w) |
738 |
{ |
739 |
if (ev_is_active (w)) |
740 |
return; |
741 |
|
742 |
ev_start ((W)w, 1); |
743 |
array_needsize (signals, signalmax, w->signum, signals_init); |
744 |
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
745 |
|
746 |
if (!w->next) |
747 |
{ |
748 |
struct sigaction sa; |
749 |
sa.sa_handler = sighandler; |
750 |
sigfillset (&sa.sa_mask); |
751 |
sa.sa_flags = 0; |
752 |
sigaction (w->signum, &sa, 0); |
753 |
} |
754 |
} |
755 |
|
756 |
void |
757 |
evsignal_stop (struct ev_signal *w) |
758 |
{ |
759 |
if (!ev_is_active (w)) |
760 |
return; |
761 |
|
762 |
wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
763 |
ev_stop ((W)w); |
764 |
|
765 |
if (!signals [w->signum - 1].head) |
766 |
signal (w->signum, SIG_DFL); |
767 |
} |
768 |
|
769 |
void evidle_start (struct ev_idle *w) |
770 |
{ |
771 |
if (ev_is_active (w)) |
772 |
return; |
773 |
|
774 |
ev_start ((W)w, ++idlecnt); |
775 |
array_needsize (idles, idlemax, idlecnt, ); |
776 |
idles [idlecnt - 1] = w; |
777 |
} |
778 |
|
779 |
void evidle_stop (struct ev_idle *w) |
780 |
{ |
781 |
idles [w->active - 1] = idles [--idlecnt]; |
782 |
ev_stop ((W)w); |
783 |
} |
784 |
|
785 |
void evcheck_start (struct ev_check *w) |
786 |
{ |
787 |
if (ev_is_active (w)) |
788 |
return; |
789 |
|
790 |
ev_start ((W)w, ++checkcnt); |
791 |
array_needsize (checks, checkmax, checkcnt, ); |
792 |
checks [checkcnt - 1] = w; |
793 |
} |
794 |
|
795 |
void evcheck_stop (struct ev_check *w) |
796 |
{ |
797 |
checks [w->active - 1] = checks [--checkcnt]; |
798 |
ev_stop ((W)w); |
799 |
} |
800 |
|
801 |
/*****************************************************************************/ |
802 |
|
803 |
#if 0 |
804 |
|
805 |
struct ev_io wio; |
806 |
|
807 |
static void |
808 |
sin_cb (struct ev_io *w, int revents) |
809 |
{ |
810 |
fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
811 |
} |
812 |
|
813 |
static void |
814 |
ocb (struct ev_timer *w, int revents) |
815 |
{ |
816 |
//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
817 |
evtimer_stop (w); |
818 |
evtimer_start (w); |
819 |
} |
820 |
|
821 |
static void |
822 |
scb (struct ev_signal *w, int revents) |
823 |
{ |
824 |
fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
825 |
evio_stop (&wio); |
826 |
evio_start (&wio); |
827 |
} |
828 |
|
829 |
static void |
830 |
gcb (struct ev_signal *w, int revents) |
831 |
{ |
832 |
fprintf (stderr, "generic %x\n", revents); |
833 |
|
834 |
} |
835 |
|
836 |
int main (void) |
837 |
{ |
838 |
ev_init (0); |
839 |
|
840 |
evio_init (&wio, sin_cb, 0, EV_READ); |
841 |
evio_start (&wio); |
842 |
|
843 |
struct ev_timer t[10000]; |
844 |
|
845 |
#if 0 |
846 |
int i; |
847 |
for (i = 0; i < 10000; ++i) |
848 |
{ |
849 |
struct ev_timer *w = t + i; |
850 |
evw_init (w, ocb, i); |
851 |
evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
852 |
evtimer_start (w); |
853 |
if (drand48 () < 0.5) |
854 |
evtimer_stop (w); |
855 |
} |
856 |
#endif |
857 |
|
858 |
struct ev_timer t1; |
859 |
evtimer_init (&t1, ocb, 5, 10); |
860 |
evtimer_start (&t1); |
861 |
|
862 |
struct ev_signal sig; |
863 |
evsignal_init (&sig, scb, SIGQUIT); |
864 |
evsignal_start (&sig); |
865 |
|
866 |
struct ev_check cw; |
867 |
evcheck_init (&cw, gcb); |
868 |
evcheck_start (&cw); |
869 |
|
870 |
struct ev_idle iw; |
871 |
evidle_init (&iw, gcb); |
872 |
evidle_start (&iw); |
873 |
|
874 |
ev_loop (0); |
875 |
|
876 |
return 0; |
877 |
} |
878 |
|
879 |
#endif |
880 |
|
881 |
|
882 |
|
883 |
|